x86 fixes

GIT PULL Ingo Molnar 1 participant 1 message Jan 18, 2011 x86

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Ingo Molnar

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2011-01-18 19:05 UTC #0 lore raw

Linus,

Please pull the latest x86-fixes-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git x86-fixes-for-linus

Thanks,

Ingo

------------------>
Brian Gerst (1):
x86: Clear irqstack thread_info

Shaohua Li (1):
x86: Make relocatable kernel work with new binutils

 arch/x86/kernel/irq_32.c      |    7 ++-----
 arch/x86/kernel/vmlinux.lds.S |   11 +++++++++--
 2 files changed, 11 insertions(+), 7 deletions(-)

arch/x86/kernel/irq_32.c +2 -5

index 96656f2..5206bb9 100644
@@ -129,8 +129,7 @@ void __cpuinit irq_ctx_init(int cpu)
 	irqctx = page_address(alloc_pages_node(cpu_to_node(cpu),
 					       THREAD_FLAGS,
 					       THREAD_ORDER));
-	irqctx->tinfo.task		= NULL;
-	irqctx->tinfo.exec_domain	= NULL;
+	memset(&irqctx->tinfo, 0, sizeof(struct thread_info));
 	irqctx->tinfo.cpu		= cpu;
 	irqctx->tinfo.preempt_count	= HARDIRQ_OFFSET;
 	irqctx->tinfo.addr_limit	= MAKE_MM_SEG(0);

@@ -140,10 +139,8 @@ void __cpuinit irq_ctx_init(int cpu)
 	irqctx = page_address(alloc_pages_node(cpu_to_node(cpu),
 					       THREAD_FLAGS,
 					       THREAD_ORDER));
-	irqctx->tinfo.task		= NULL;
-	irqctx->tinfo.exec_domain	= NULL;
+	memset(&irqctx->tinfo, 0, sizeof(struct thread_info));
 	irqctx->tinfo.cpu		= cpu;
-	irqctx->tinfo.preempt_count	= 0;
 	irqctx->tinfo.addr_limit	= MAKE_MM_SEG(0);
 
 	per_cpu(softirq_ctx, cpu) = irqctx;

arch/x86/kernel/vmlinux.lds.S +9 -2

index bf47007..b34ab80 100644
@@ -34,11 +34,9 @@ OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT)
 #ifdef CONFIG_X86_32
 OUTPUT_ARCH(i386)
 ENTRY(phys_startup_32)
-jiffies = jiffies_64;
 #else
 OUTPUT_ARCH(i386:x86-64)
 ENTRY(phys_startup_64)
-jiffies_64 = jiffies;
 #endif
 
 #if defined(CONFIG_X86_64) && defined(CONFIG_DEBUG_RODATA)

@@ -142,6 +140,15 @@ SECTIONS
 		CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
 
 		DATA_DATA
+		/*
+		 * Workaround a binutils (2.20.51.0.12 to 2.21.51.0.3) bug.
+		 * This makes jiffies relocatable in such binutils
+		 */
+#ifdef CONFIG_X86_32
+		jiffies = jiffies_64;
+#else
+		jiffies_64 = jiffies;
+#endif
 		CONSTRUCTORS
 
 		/* rarely changed data like cpu maps */